Front door lock



Dec. 11, 1945. I H. G. vblsm 2,390,756

FRONT noon LOCK Filed Dec. 27, 1943 3 Sheets-Sheet 1 1945' H. G. VOIGHT 2,390,756

FRONT noon LOCK Filed Dec. 27, 1943 3 Sheets-Sheet 2 13 fl' 449 14 23 v, I v ,34, 30 2a FRONT DOOR LOCK Filed Dec. 27, 1943 3 Sheets-Sheet 3 Patented Dec. 11, 1945 FRONT DOOR LOCK Henry G; Voight, Hamden' Conn assignor to Sargent & Company, New Haven, Conn, a corporation of Connecticut Application December 27, 1943, Serial No. 515,724

UNITED STATES PATENT OFFICE This invention relates to door locks, and more particularly to a lock. designed to be used in connection with a front door of a building or dwelling, although itwill be understood that. the principles of the invention may be applied to looks for other uses, and for doors employed in other cations.

In the manufacture of locks it is desirable to construct the lock so that it may beused with a door of either hand, regardless of which edge of the door may be the hinged edge. In the ordinary mortise lock this result is ofter achieved by so constructing the latch bolt of the lock that itmay be reversed in position. However, in the case of a door which employes a so-called guardbolt or auxiliary bolt which controls a latch-dogging member, it. is impossible to reverse the latch bolt as the bolt opening in the strike plate isnot sym metrical, the auxiliary bolt usually being received in a portion of the same opening in.which the latch bolt is received.

The present invention relates to a lock of the type in which an auxiliary or guard bolt is provided to control a latch-dogging member, and is designed to provide a lock which may be readily and cheaply manufactured, and which at the same time will be applicable to doors which open in. either direction, or which are hinged at either edge. To effect this result an auxiliary case, which may be termed a boltcase, is employed, which bolt case contains the bolt mechan ism,-including the bolt-dogging mechanism, and which may be bodily assembled in the main case in reverse positions, so thatthe beveled face of thelatch bolt may face ineither direction. The maincase of the lock is made in two parts which are substantially alike, each part comprising one half of the lock case, so that when one portion of thismain case is removed the auxiliary case may be readily assembled therein and secured in place when the two parts of the main caseare joined together.

It will also be noted as the description proceeds that the main case of the lock itself is of novela door lock of the type commonly. known as a frontdoor lock, wherein the bolt and, case within the bolt mounted may be assembled in reversed positions with respect to the remaining parts of e; lock--.

A; still further; object, of the invention is to pro vide; afront door lock having a main case and a bolt case, the bolt case hav ing the bolt mechanism. assembledtherein and being insertable as aunit in thetmain case in reversed positions whereby it may beem-ployed with a door of either hand.

A. still further object oftheinvention is to provide a case for a door lock of nov'elconstruction, which case may be readily and cheaply manufactured of sheet material, and which will have provisionf or assembly therein of a latch bolt inofle of: tworelatively reversed positions.

To these and other ends the invention consists. in the novel features and combinations of parts to be hereinafter described and claimed.

In the accompanying drawings:

1v is: afragmentary view of a. door to which is applied a lock embodying my invention; 7

Fig. 2' is an. edge view of, the parts shown in Fig. 1.; I

Fig. 3'' is a sectionalflview' on line 3- -3 of Fig. I;'

Rig. 4 is a view of the lock case with the cover removed to show the interior parts, certain of the partsibein 'g shown in section;

Fig. 5 is a sectional view or the main case of thelock, the two parts being shown in slightly" spaced} positions; g I

Fig. 6.. is an interior View of one of, the halves of the case;

Figl'. 'Tis' ararend View" of the case;

Fig. 8/is ajfr'ont endvi'ewthereof;

Fig. 91s a sectional View Of thbOlt CaS'e;

Figi-u is a sectional" vi'ew of the bolt case taken at right angles to the view shown in Fig. 9'; H

Fig. 1 1 is a front view ofthe bolt case on line r n of Fig. 1 o;

Fig. 12 is a rear'view of the bolt case; and

Figs. 1-3, 14' and 15 are fragmentary sectional views of the front portionof the lock case showing modified" formsof my invention.

Toil'lustrate a preferred embodiment of my invention, I have shown a' door lllhaving' mount ed therein th case I l of a lock of the type con-1- monly' called afrontdoor lock. As will be ap parent, the case H is of substantially cylindrical form from front to rear, so that it may be insorted inacylindrical bore formed in the edge of the door shown more particularly in Figs. 5 to 8 of the drawings, theczaise l l, whichI-terr rr the m'aiir case of the lock, consists of two substantially similar sections I2 and I3, the latter having secured thereto a post I4 to which may be secured a screw I5 passing through an opening I6 in the portion I2, to secure the parts together. At the rear end of section I2 is a substantially semi-circular end member I! which cooperates with a member I8 of similar shape secured to thesection I3 to close the rear end of the case when the two sections are secured together. The section I! may be provided with a V-shaped lug I9 fitting into a complementally shaped recess in the section I8 to assist in locating the two sections of the case.

The casing parts are provided with openings 2| and 22 for rollback hubs,.to be described hereinafter, and also with openings 23 and 24 for the reception of a dogging member. Rearwardly of the post I4 a pair of U-shaped guide members 25 and 26 are secured to the respective casing portions, these members having elongated flat body portions to assist in guiding the lock mechanism, and outwardly extending leg portions 2! and 28 which space the body portion from the walls of the lock and are secured in openings 29 and 30 in the sections l2 and I3. Rearwardly projecting tongues 33 and 34 are provided upon the members 25 and 26, which tongues are secured in openings 35 and 36in the sections I1 and I8, so that these rear-end closure members I1 and I8 are by this means secured to the respective sections I2 and I3. The members 25 and 25 are also provided with openings 31 and 38 for the rollback hubs, and openings 39 and 46 for a dogging member, as will be later described.

Disposedin the front portion of the main case II when the parts are assembled is a bolt case 4|, shown in Figs. 9 to 12. This bolt case comprises a cylindrical body portion designed to fit snugly within the front open end of the main case and project therefrom. Secured to the front end of the bolt case 4| is a face plate 42, which, as shown in Figs. 9 and 10, has its end portions displaced outwardly slightly from the intermediate portion, as shown at 53, so that lugs 44 on the bolt case M may be passed through openings 45 in the face plate and turned over to secure the two parts together. without interrupting the fiat surface of the face plate, to which, if desired, a finishing-plate 45 may be secured, as shown in Figs. 9 and 10.

The bolt cas M is open at its front end but closed at its rear end by means of an end plate 41 which may be secured to the case in any desired way, such as by welding. This end plate is provided with outwardly projecting cars 48 designed to extend into openings 49 in the main casing sections I2 and I3, so as to secure the bolt case in .place. It will be understood that the two portions I2 and I 3 of the main case are separated when it is desired to assemble the bolt case therein. The bolt case is simply placed between the two halves, with the lugs or ears 48 registering with the openings 49, and when the casing sections I2 and I3 are secured together by the screw I5 the bolt case will be secured in place within the main case. It may also be noted that the bolt case may be secured in the main case in either one of two relatively reversed positions, as may be necessary to reverse the position of the latch bolt.

The mechanism of the lock may now be described. Within the bolt case is reciprooably mounted a bolt comprising a head 50 and a stem 5|, the head being beveled, as is usual, and the stem projecting from the case through an opening 52 in the rear end .closure member Al. The bolt is urged to protracted position by a spring 53. Adjacent the latch bolt just described is reciprocably mounted an auxiliary bolt or guard bolt 54, this bolt being urged to protracted position by a spring 55. Also mounted beside the stem 5I of the main bolt is a slide or plate 56, this plate being provided with elongated openings 5'! receiving pins or screws 58 connected tothe stem 5Iso that this slide will be connected to the stem by a lost-motion connection. The stem 5| and slide 55 are provided at their rear ends with headed portions 59 and 69, respectively, and the slide is also provided with outwardly projecting arms 6i carrying laterally directed pins 62 designed to cooperate with beveled lugs 63 provided upon dogging members 64 of L-shaped form mounted in the case. It will be noted that the rear ends 65 of these L-shaped members extend inwardly toward the stem 5| and slide 56 and are provided with openings to permit the passage therethrough of these members. The springs 53 and 55 also react at their rear ends against the ends 65 of the dogging members, so as to'urge the forward ends of these members inwardly.

The auxiliary bolt 54 is also provided with a crossarm 66 carrying laterally directed pins Bl designed to cooperate with lugs 68 on the members 54, so that when the guard bolt is extended the engagement of the pins 61 with the lugs 68 will hold the members 64 in the position shown in Fig. 4. When, however, the guard bolt is retracted by engagement with the strike, the pins 51 will be forced rearwardly out of engagement with the lugs 63 and permit the forward ends of the members 64 to move inwardly in the path of a; latch bolt and dog it against retraction. When the parts are in this position, if the latch bolt is pressed inwardly it will strike the ends of the members 64 and be prevented from further inward movement. If, however, it is.retracted' by the knob mechanism, to be later described, which also draws rearwardly the slide 56, the members 6 1 will be cammed upwardly by the pins 62 and permit the retraction of the latch bolt.

Engaged with the headed ends 59 and 60 of the stem 5I and slide 56 is a retracting member I0 urged forwardly by the spring 7 I, this retracting" member having rearwardly extending spaced arms I2 provided with outwardly projecting lugs 73 slidably mounted in "slots'l l in the lock case. These lugs are adapted to be engaged by rollbacks I5 and 16 carried by hubs ll and I8 rotatably mounted in the case and in the guide members 26 and 27. The rollback hub 78 will be mounted at the outer side of the door, and is adapted to be rotated by a spindle section 19 actuated by the outer knob stem 89, while the rollbackhub is at the inner side of the door and is rotated by a spindle section 8| operatedby the inner knob 82. Mechanism for clogging the outerknob is provided, which mechanism is designed to be operated at the inside of the door. For this purpose the outer rollback hub isprovided with a rearwardly directed lug-83 designed to be embraced by spaced arms 84 provided upon a detent or dogging slide 85 slidably mounted in the members 25 and 26, as shown more especially in Fig. 3. Threadedly secured to the member 85 is a push button 85 which extends outwardly through the inner rose 81 so that the member85 may be manipulated inwardly and outwardly to engage and disengagethe lug 83. The member 85 maybe held inadjusted position by means ofaspring 88 mounted in openings 88 in the case, andprovided with an arched or v-shaped portion 93 arranged to engage a. complementally shaped portion 9| on the dogging member 85.

It'will be understood that the spindles l9 and M constitute a sectional spindle, the twosections meeting at approximately the dividing line between the rollbacks i5 and 15, and that these spindle sections are independently rotatable so that the-inner knob may be rotated even though the rollback of the outer knob is dogged. The particular arrangement of the spindles maybe like-that shown in my prior Patent No. 2,272,101, granted February 3, 19412.

As shown more particularly in Figs. 2, land I I, the face plates 42 and 45- are provided with openings of suitable shape and size to slidably receive the latch bolt. 56- and guard or auxiliary bolt 5.4. Asis usual, however, the opening in the strike plate will receive only the latch bolt head 55], so. that the guard bolt willbe held in retracted position when the door is: closed, thus serving to permit the outer ends of the members 641to drop inwardly behind the head-of the latch bolt.

When either of the knobs is. turned to. rotate the rollbacks 15' or 1.6, the retracting. member It will retract the: latch bolt by meansof its connection withthe head 53 of the latch bolt stem 54... Itwillalso; draw back the slide or.v plate. 5.6, which will serve by engagement of. the. pins -2 with. the. cam-shaped lugs. 63. to throw the forward ends of the members 64 out of engagement with. thelatch bolt so asto permit the retraction of the latter. As has been previously described, the lost-motion. connection between. the slide 55 and the .latch bolt stem permits. the latch-bolt tobe moved inwardly a slight distance by pressureupon. the end thereof before any movement of theplate 56.'takes, place. When, however, the latch retractor 1B is actuated, these twoimembers move substantially simultaneously so that the dogging members. 64'. are moved to inoperativepositionbefore they are engaged by the rear face. of the head of the latch bolt.

It will be apparent that I have provided a lock of-the type usually used in connection with a front door, of novelarrangement and construction, and: have arranged the bolt mechanism, including the guard bolt, in a separate case which is received and enclosed within the main case, but which may be readily mounted in the main case in either oftwo relatively reversed positions. In reversing the latch bolt structure the entire-bolt assembly, including the case ii, is reversed with respect to the main case H Moreover, the end plates or face plates 4-2 and 46- are secured tothe bolt case M, which pro jectsfrom the forwardopen end of the main case H ,and these'plates serve-ast-he face plates of-the lock; and are, of course, reversed with the bolt mechanism.

Also novel means are provided in the main lock case for mounting the rollback hubs, thesemeans being'constituted by the U-shapedplates 25,and 26; which not only serve this purpose but also serve to secure the end closure sections ll and lB-to the main sections [2* and E3 of the case ll.

' In Fig. 13' of the drawings I have shown a slightly modified construction wherein the sections offthe' main case H' are not only provided with openings 49-but also with openings 49*, so

iii

that: the lugs 48 uponthe bolt case may be engaged in either pair of these openings. If engaged in the openings 4%, as: shown in'Fi g. 13; the bolt case 41 projects from the main case it, and thus allows a greater setback for the knob spindle, or positions the knob spindle at a reater distance from the edge of the door.

In Figs. 14 and 15 of the drawings: I have shown a further modificationwherein the sections of the main case Hareprovided with studs or rivets 94, and the bolt case 4 providedwith a, plurality of spaced openings and 95, so that the rivets 9.4 in the main case may be engaged either in the openings 95, as shown in Fig. 14, or in the openings 95, as shown in Fig. 15. In the latter case the bolt case 41 projects forwardly from the main case and provides a'greater' setback for the knob spindles from the edge of the door;

In positioning the bolt case in its forward-1y adjusted positions, as shown in Figs. 13 and 15', it will be necessary to employ a retracting member 10 of greater length than that shown-in Fig. 3', or that employed when the parts are in the position shown in Fig. 14. This, however, would be the only change necessary to employthe lock with the knob spindles disposed at different distances from. the edge of the door.

While I have shown and described some preferred embodiments of my invention, it will be understood that it is not to be limitedto all of the details shown, but is capable of modification and variation within the spirit of the invention and within the scope of the claims.

What I claim is:

1. A door lock comprising a main case having bolt-retracting mechanism therein, a bolt case adjustably secured within the forward end of the main case, and a bolt mounted in, and supported by, the bolt case for adjustment asa unit there- Withand connected to said retracting mechanism, said main case being of cylindrical shape and open at its forward end, and said bolt case also being cylindrical and fitting snugly within the main case with its axis substantially coinciding with that of the main case.

2. A casing for a door lock, said casing being of substantially cylindrical shape and comprised of two substantially identical half sections, a substantially semi-circular closure member at one end of each of said sections, and'a guide plate secured to each of said sections and spaced from the wall thereof, said plates being substantially parallel when said sections are assembled.

3, A casing for a door lock, said casing being of substantially cylindrical shape and comprised of two substantially identical half sections, a substantially semi-circular closure member at one end of 'each of said sections, and a guide plate secured to each of said sections and spaced from the wall thereof, said plates being substantially parallel when said sections are assembled, and each of said plates being securedto one of. the sections and to the corresponding closure. member to hold the latter in place.

4'. A casing for a door lock, said casing. being of substantially cylindrical shape and comprised of two substantially identical half sections, a substantially semi-circular closure member at one end of each of said sections, and a guide plate secured to. each of said sections and spaced from the wall thereof, said plates being substantially parallel when said sections. are assembled, and each of said plates having, endportions secured in openings inthe respective sections.

5. A casing for a door lock, said casing being of substantially cylindrical shape and comprised of two substantially identical half sections, a substantially semi-circular closure member at' one end of each of said sections, a guide plate secured to each of said sections and spaced from the wall thereof, said plates being substantially parallel when said sections are assembled, and each of said plates having end portions secured in openings in the respective sections, and a rearwardly projecting tongue secured to an end closure member.

6. A casing for a door lock, said casing being of substantially cylindrical shape and comprised of two substantially identical half sections, a substantially semi-circular closure member at one end of each of said sections, a guide plate secured to each of said sections and spaced from the wall thereof, said plates being substantially parallel when said sections are assembled and being provided with openings, rollback hubs rotatably mounted in said openings, and a latch bolt in the casing operated by said hubs.

'7. A door lock comprising a main case having bolt-retracting mechanism therein, a bolt case resting within the forward end of the main case, and a bolt mounted in the bolt ease and connected to said retracting mechanism, said main case being formed of separable sections, and said bolt case being clamped'between said sections when the latter are secured together.

8. A door lock comprising a main case having bolt-retracting mechanism therein, a bolt case resting within the forward end of the main case, a .bolt mounted in the bolt case and connected to said retracting mechanism, said main. case being formed of separable sections, and means on the bolt case engaging said sections when the latter are secured together to retain the bolt 7 case in assembled relation with the main case.

9. A door lock comprising a main case having bolt-retracting mechanism therein, a bolt case resting within the forward end of the main case, and a bolt mounted in the bolt case and connected to said retracting mechanism, said main case being formed of separable sections each of which is provided with an opening, and said bolt case having projecting lugs engaging in said openings when the casing sections are secured together.

10. A door lock comprising a main case having bolt-retracting mechanism therein, a bolt case resting within the forward end of the main case, and a. bolt mounted in, and supported by, the bolt case and connected to'said retracting mechanism, said bolt case being adjustable with respect to the main case in a direction longitudinally of the movement of the .bolt, and the bolt being carried with said bolt case in its adjustments.

11. A door lock comprising a main case having bolt-retracting mechanism therein, a bolt case resting within the forward end of the main case, a bolt mounted in, and supported by, the bolt case and connected to said retracting mechanism, and means for connecting the bolt case to the main case comprising an opening in the wall of one of said members and a projecting part upon the other member engaging said opening.

12. A door lock comprising a main case having bolt-retracting mechanism therein, a bolt case resting within the forward end of the main case, a bolt mounted in, and supported by, the bolt case and connected to said retracting mechanism, and means for connecting the bolt case to the main case comprising a plurality of spaced openings in one of said members and a projecting element on the other member engageable in either of said openings whereby the bolt case and the bolt supported thereby may be adjusted with respect to the main case.

13. A door lock comprising a main case having bolt retracting mechanism therein, a bolt case resting within the forward end of the main case, a bolt reciprocably mounted in the bolt case and connected to said retracting mechanism, said bolt case and contained bolt being reversible as a unit in said main case about an axis parallel to the movement of the .bolt, and means for securing said bolt case to the main case in either of said reversed positions.

14. A door lock comprising a main case having bolt retracting mechanism therein, a bolt case resting within the forward end of the main case, a bolt reciprocably mounted in the bolt case and connected to said retracting mechanism, said bolt case and contained bolt being reversible as a unit in said main case about an axis parallel to the movement of the bolt, means for securing said bolt case to the main case in either of said reversed positions, and means restraining saidmovement of the retracting mechanism, said bolt mechanism and bolt, case being reversible as a unit about an axis parallel to the direction of movement of the bolt, means for fixedly securing said bolt case to the main case in either of said reversed positions, and means connecting said latch bolt and dogging means with the retracting mechanism for operation thereby in either of said positions.

16. A door lock comprising a main case of generally tubular shape, bolt retracting mecha nism movably mounted in said case, a bolt case of generally tubular shape snugly received in the forward end of the lock case, bolt mechanism mounted in the bolt case including a latch bolt and bolt dogging means, said dogging means being moved to inoperative position by movement of the retracting mechanism, said bolt case and contained mechanism being bodily reversible as a unit about the longitudinal axis of the main case, means for securing saidbolt case to the main case in either of said reversed positions, and means connecting said latch bolt and dogging means with the retracting mechanism for operation thereby in either of said positions.

1'7. A door lock as set forth in claim 16 in which a face plate is provided on the bolt case through which the bolt projects, and a guard bolt for said dogging mechanism is mounted within the bolt case and projects through said face plate.

18. A door lock comprising a main case open at its forward end,.bolt retracting mechanism movably mounted in said case, a bolt case snugly received in the forward end of the lock case and secured thereto, bolt mechanism mounted in the bolt case including a reciprocating latch bolt and a bolt dogging means, said dogging means being moved to inoperative position by movement of the retracting mechanism, said bolt case and bolt mechanism being reversible as a unit in the main case about an axis parallel to the movement of the bolt, means connecting said latch bolt and dogging means with the retracting mechanism for operation thereby in either of said reversed positions, said bolt case having a rear wall provided with an opening, and said connecting means comprising a stem on the bolt to extend through said opening for engagement with the retracting mechanism.

19. A door lock comprising a, main case open at its forward end, bolt retracting mechanism movably mounted in said case, a bolt case snugly received in the forward end of the lock case and secured thereto, bolt mechanism mounted in the bolt case including a reciprocating latch bolt and a bolt dogging means, said dogging means being moved to inoperative position by movement of the retracting mechanism, said bolt case and bolt mechanism being reversible as a unit in the main case about an axis parallel to the movement of the bolt, means connecting said latch bolt and dogging means with the retracting mechanism for operation thereby in either of said reversed positions, said bolt case having a rear wall provided with an opening, said connecting means comprising a stem on the bolt to extend through said opening for engagement with the retracting mechanism, and a bolt-protracting spring in said bolt case acting against the rear wall thereof.

20. A dOOr lock comprising a main case of substantially tubular shape having bolt retracting mechanism mounted therein, a bolt case resting within the forward end of the main case, bolt mechanism in said bolt case comprisinga reciprocable latch bolt and spring means for protracting said bolt, said bolt case and mechanism therein being reversible as a unit about the axis of the main case, and means securing said bolt case to the main case in either of said reversed positions to face the bolt in either of two oppo- 20 site directions.

HENRY G. VOIGHT. 

